文军,熊慧生,巫桁锞,蒋参,王维

• 1:重庆市肿瘤研究所重庆市肿瘤医院重庆市癌症中心

摘要(Abstract)：

目的观察羟基红花黄色素A(HSYA)对结直肠癌细胞增殖、侵袭、迁移和凋亡的影响及其分子机制。方法采用HSYA低、中、高剂量作用于HT-29细胞,在24 h、48 h、72 h用MTT法检测细胞抑制率,Transwell实验分析HT-29细胞迁移和侵袭情况,流式细胞术分析HSYA对HT-29细胞凋亡及周期分布的影响;免疫印迹法(western blot)检测E-cad、Vi、FN、TGF-β、Smad2和α-SMA蛋白的表达水平。结果 HSYA作用于HT-29细胞后,HT-29细胞体外增殖均受到抑制(均P<0.05),其抑制细胞增殖的效果与HSYA的浓度和作用时间有关。HSYA明显抑制HT-29细胞的侵袭和转移(均P<0.05),同时HT-29细胞凋亡率也均增高(均P<0.05),表现为G0/G1期细胞比例增加(均P<0.05),S期细胞比例降低(均P<0.05)。HSYA能够通过增加E-cad蛋白表达(均P<0.05)和减少Vi和FN蛋白表达(均P<0.05)抑制HT-29细胞上皮间质化(EMT)过程的影响。随着HSYA的浓度升高,TGF-β、Smad2和α-SMA蛋白表达均下降(均P<0.05)。结论 HSYA能够抑制结直肠癌细胞增殖、侵袭、迁移、EMT和促进结直肠癌细胞凋亡,其机制可能与抑制TGF-β信号通路激活有关,HSYA可能成为结直肠癌的治疗靶点。

关键词(KeyWords)： 羟基红花黄色素A;HT-29细胞;增殖;细胞周期;凋亡;TGF-β

Abstract:

Keywords:

基金项目(Foundation): 重庆市卫生和计生委中医药科技项目(zy201402144)

作者(Author): 文军,熊慧生,巫桁锞,蒋参,王维

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